\begin{tikzpicture}
    \tkzDefPoints{0/0/O}
    \tkzDefPoint(180:1.5){A}
    \tkzDefPoint(80:1.5){B}
    \tkzDefMidPoint(A,O)  \tkzGetPoint{C}
    \tkzInterLC[common=A](A,B)(C,A)  \tkzGetFirstPoint{D}

    \tkzDrawCircle[thick](O,A)
    \tkzDrawCircle[thick](C,A)
    \tkzDrawSegments(A,O  A,B)
    \tkzDrawPoint(C)
    \tkzLabelPoints[left](A)
    \tkzLabelPoints[above](B,D)
    \tkzLabelPoints[below](C)
    \tkzLabelPoints[right](O)
\end{tikzpicture}

